<span>Billy is having trouble in the concept of conservation, which is part of the concrete operational stage of cognitive development.
Trouble in conservation means that Billy is unable to understand that a change in the form of an object does not necessarily mean that the quantity of it has changed. In this instance, Billy has not acquired the ability to understand the 1/2 full glass of orange juice does not increase in quantity when it's poured in his favorite (smaller glass) and reaches its brim.</span>
Answer: Eleven is the answer you are looking for. Hope this helps :)
Explanation: Constantinople endured for more than 1,100 years as the Byzantine capital in large part due to the protective wall completed under Theodosius II in 413. Expanding the city perimeter west from Constantine's wall by approximately a mile, the new one stretched 3-1/2 miles from the Sea of Marmara to the Golden Horn.
The stage where the flatworm’s contraction response to light
is established and gradually strengthened is called acquisition. Acquisition is
a process where something or an individual acts of having to gain or obtain
something from a particular source or thing that it gained from.
The most effective choice for a speech is usually the one that could aroused the emotion of your audiences.
So it would be something like : the history of democracy
With this topic, you could remind the audience on the fight that your ancestors have to pass through to achieve the current greatness and conditions
hope this helps
